https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109228
Bug ID: 109228
Summary: warning: implicit declaration of function
'__riscv_vlenb'
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: malat at debian dot org
Target Milestone: ---
On riscv64 I am getting the following error with gcc-13:
% cat t.c
#include <riscv_vector.h>
unsigned long test_vlenb(void) {
return __riscv_vlenb();
}
Leads to:
% LIBRARY_PATH=/usr/lib/gcc-snapshot/lib /usr/lib/gcc-snapshot/bin/gcc
-march=rv64gcv1p0 -c -v t.c
Using built-in specs.
COLLECT_GCC=/usr/lib/gcc-snapshot/bin/gcc
Target: riscv64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 20230315-1'
--with-bugurl=file:///usr/share/doc/gcc-snapshot/README.Bugs
--enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust
--prefix=/usr/lib/gcc-snapshot --with-gcc-major-version-only --program-prefix=
--enable-shared --enable-linker-build-id --disable-nls --enable-bootstrap
--enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm
--disable-libquadmath --disable-libquadmath-support --enable-plugin
--with-system-zlib --enable-libphobos-checking=release
--with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch
--disable-werror --disable-multilib --with-arch=rv64gc --with-abi=lp64d
--enable-checking=yes --build=riscv64-linux-gnu --host=riscv64-linux-gnu
--target=riscv64-linux-gnu --with-build-config=bootstrap-lto-lean
--enable-link-serialization=2
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.0.1 20230315 (experimental) [master r13-6680-ga9ae16db8cb]
(Debian 20230315-1)
COLLECT_GCC_OPTIONS='-march=rv64gcv1p0' '-c' '-v' '-mabi=lp64d'
'-misa-spec=20191213'
'-march=rv64imafdc_v1p0_zicsr_zifencei_zve32f_zve32x_zve64d_zve64f_zve64x_zvl128b_zvl32b_zvl64b'
/usr/lib/gcc-snapshot/libexec/gcc/riscv64-linux-gnu/13/cc1 -quiet -v
-imultilib . -imultiarch riscv64-linux-gnu t.c -quiet -dumpbase t.c
-dumpbase-ext .c -march=rv64gcv1p0 -mabi=lp64d -misa-spec=20191213
-march=rv64imafdc_v1p0_zicsr_zifencei_zve32f_zve32x_zve64d_zve64f_zve64x_zvl128b_zvl32b_zvl64b
-version -o /tmp/ccJgYXea.s
GNU C17 (Debian 20230315-1) version 13.0.1 20230315 (experimental) [master
r13-6680-ga9ae16db8cb] (riscv64-linux-gnu)
compiled by GNU C version 13.0.1 20230315 (experimental) [master
r13-6680-ga9ae16db8cb], GMP version 6.2.1, MPFR version 4.2.0, MPC version
1.3.1, isl version isl-0.25-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory "/usr/local/include/riscv64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc-snapshot/lib/gcc/riscv64-linux-gnu/13/include-fixed/riscv64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc-snapshot/lib/gcc/riscv64-linux-gnu/13/include-fixed"
ignoring nonexistent directory
"/usr/lib/gcc-snapshot/lib/gcc/riscv64-linux-gnu/13/../../../../riscv64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc-snapshot/lib/gcc/riscv64-linux-gnu/13/include
/usr/local/include
/usr/lib/gcc-snapshot/include
/usr/include/riscv64-linux-gnu
/usr/include
End of search list.
Compiler executable checksum: 81700f2a313a464c1070ea0a35a4372b
t.c: In function 'test_vlenb':
t.c:4:10: warning: implicit declaration of function '__riscv_vlenb'; did you
mean '__riscv_vlm_v_b1'? [-Wimplicit-function-declaration]
4 | return __riscv_vlenb();
| ^~~~~~~~~~~~~
| __riscv_vlm_v_b1
COLLECT_GCC_OPTIONS='-march=rv64gcv1p0' '-c' '-v' '-mabi=lp64d'
'-misa-spec=20191213'
'-march=rv64imafdc_v1p0_zicsr_zifencei_zve32f_zve32x_zve64d_zve64f_zve64x_zvl128b_zvl32b_zvl64b'
as -v --traditional-format -march=rv64gcv1p0
-march=rv64imafdc_v1p0_zicsr_zifencei_zve32f_zve32x_zve64d_zve64f_zve64x_zvl128b_zvl32b_zvl64b
-mabi=lp64d -misa-spec=20191213 -o t.o /tmp/ccJgYXea.s
GNU assembler version 2.40 (riscv64-linux-gnu) using BFD version (GNU Binutils
for Debian) 2.40
COMPILER_PATH=/usr/lib/gcc-snapshot/libexec/gcc/riscv64-linux-gnu/13/:/usr/lib/gcc-snapshot/libexec/gcc/riscv64-linux-gnu/13/:/usr/lib/gcc-snapshot/libexec/gcc/riscv64-linux-gnu/:/usr/lib/gcc-snapshot/lib/gcc/riscv64-linux-gnu/13/:/usr/lib/gcc-snapshot/lib/gcc/riscv64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc-snapshot/lib/:/usr/lib/gcc-snapshot/lib/gcc/riscv64-linux-gnu/13/:/lib/riscv64-linux-gnu/:/lib/:/usr/lib/riscv64-linux-gnu/:/usr/lib/
COLLECT_GCC_OPTIONS='-march=rv64gcv1p0' '-c' '-v' '-mabi=lp64d'
'-misa-spec=20191213'
'-march=rv64imafdc_v1p0_zicsr_zifencei_zve32f_zve32x_zve64d_zve64f_zve64x_zvl128b_zvl32b_zvl64b'
